This paper on "Computer Integrated Manufacturing, CIM, Has Come to Stay. Is FEM a Part of the Solution or Adding to the Problems?" was presented at the International Conference on Quality Assurance and Standards in Finite Element Analysis - 22-25 May 1989, Stratford-upon-Avon, England.

Abstract

The introduction of computers in the design of products has changed the turn around time for new designs. Analyses based on computer simulation using finite element methods are comparatively slow. The functionality of FEM cannot support the speed and dynamics of model changes found when using CAD. To include FEM technology in the CIM strategy, the finite element method and its use must adapt to the new requirements set by CAD based product design. This can only be achieved through a speed up of both the manual work involved and the analysis itself.
Ways of resolving the problems encountered in the use of CAD models for FEM analysis are highlighted, focussing on the transformation and discretisation processes. The design analysis loop and the alternative models between the design and the analysis are described. The approach shows how FEM technology may be embedded in a solid modelling environment to support the dynamics of CAD design. The skilled user must have an FEM solid modeller in which to prepare and run FEM analyses at a speed that will support the design process in a CIM environment.